USB rechargeable battery: 1000 mAh integrated lithium battery (CE / FCC / ROHS certified), includes charging cable, 1000 mAh built-in rechargeable lithium battery and micro USB connection can be recharged with a laptop, charger or bank of energy. You do not have to worry about changing the batteries. LED light and touch screen: 21 LED lights around the edge of the mirror, can be used in low light or dark condition. Adopt a highly sensitive touch screen that allows you to turn on or off the light and adjust the brightness by touching the switch. Satisfy your different photometric needs.